Source code for girder.models

#!/usr/bin/env python
# -*- coding: utf-8 -*-

###############################################################################
#  Copyright 2013 Kitware Inc.
#
#  Licensed under the Apache License, Version 2.0 ( the "License" );
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
###############################################################################

import pymongo

from pymongo.read_preferences import ReadPreference
from girder.utility import config
from girder.constants import TerminalColor

_dbClient = None


[docs]def getDbConfig(): """Get the database configuration values from the cherrypy config.""" cfg = config.getConfig() if 'database' in cfg: return cfg['database'] else: return {}
[docs]def getDbConnection(): """ Get a MongoClient object that is connected to the configured database. We lazy-instantiate a module-level singleton, the MongoClient objects manage their own connection pools internally. """ global _dbClient if _dbClient is not None: return _dbClient dbConf = getDbConfig() if not dbConf.get('uri'): dbUriRedacted = 'mongodb://localhost:27017/girder' print(TerminalColor.warning('WARNING: No MongoDB URI specified, using ' 'the default value')) _dbClient = pymongo.MongoClient(dbUriRedacted) else: parts = dbConf['uri'].split('@') if len(parts) == 2: dbUriRedacted = 'mongodb://' + parts[1] else: dbUriRedacted = dbConf['uri'] replicaSet = dbConf.get('replica_set') if replicaSet: _dbClient = pymongo.MongoReplicaSetClient( dbConf['uri'], replicaSet=replicaSet) _dbClient.read_preference = ReadPreference.SECONDARY_PREFERRED else: _dbClient = pymongo.MongoClient(dbConf['uri']) print(TerminalColor.info('Connected to MongoDB: {}' .format(dbUriRedacted))) return _dbClient